/Engine/Plugins/Editor/UVEditor/Source/UVEditorTools/Public/Selection/UVEditorMeshSelectionMechanic.h
bool GetHitTid ( const [FInputDeviceRay](API\Runtime\InteractiveToolsFramework\FInputDeviceRay) & ClickPos, int32 & TidOut, int32 & AssetIDOut, bool bUseUnwrap, int32 * ExistingSelectionObjectIndexOut )